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2025 ICD-10-CM code A77.9

Spotted fever, unspecified. Tick-borne typhus NOS.

Use additional code to identify resistance to antimicrobial drugs (Z16.-). Excludes1: certain localized infections - see body system-related chapters. Excludes2: carrier or suspected carrier of infectious disease (Z22.-) infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-) infectious and parasitic diseases specific to the perinatal period (P35-P39) influenza and other acute respiratory infections (J00-J22)

Medical necessity for testing and treatment of spotted fever is based on the patient's clinical presentation, risk factors (exposure to ticks/insects), and the need to confirm the diagnosis and prevent serious complications (e.g., organ damage).

Diagnosis of spotted fever is based on patient history (travel to endemic areas, tick bites), symptoms (fever, headache, rash), and lab tests (CBC, serology, skin biopsy). Treatment involves antibiotics (doxycycline), supportive care (oxygen, IV fluids), and monitoring for complications.

In simple words: Spotted fever is an infectious disease spread by the bites of infected ticks, fleas, lice, or mites.It causes symptoms like high fever, headache, and a rash.

Other spotted fevers refers to infectious disease primarily caused by various species of bacteria typically transmitted via the bites of fleas, lice, mites, or ticks carried by rodents and some domestic animals. The provider does not document the specific type of spotted fever that the patient has.

Example 1: A patient presents with fever, headache, muscle aches, and a characteristic rash after a recent camping trip. The provider suspects spotted fever and orders blood tests to confirm the diagnosis and determine the specific type., A patient with a history of a tick bite develops a high fever, chills, and a widespread rash.Without specifying the exact type, the provider diagnoses spotted fever and starts doxycycline treatment., A child develops a fever, rash, and abdominal pain.The provider considers various diagnoses, including spotted fever, and conducts tests to identify the underlying cause.

Documentation should include details of the patient's symptoms (fever, rash, headache, etc.), history of tick or insect bites, travel history, laboratory findings (CBC, serology, etc.), and response to treatment.

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